de.fhg.igd.ui
Class DropZone

java.lang.Object
  javax.swing.border.AbstractBorder
      javax.swing.border.LineBorder
          de.fhg.igd.ui.DropZone

All Implemented Interfaces:

Border, DropTargetListener, EventListener, Serializable

public class DropZone

extends LineBorder

implements DropTargetListener

A generic drop zone for object selections. This DropZone inherits from Border and can be added to existing components easily. Whenever a drag enter is recognized the border is highlighted until the drop is complete or aborted or a drag exit is recognized.

Version:

"$Id: DropZone.java 1913 2007-08-08 02:41:53Z jpeters $"

Author:

Volker Roth

See Also:

Serialized Form

Field Summary

protected DropDelegate	delegate_ The delegate that receives dropped data.
static DataFlavor	DROPZONE_FLAVOR The DataFlavor supported by this drop zone.
protected DropTarget	dtarget_ The DropTarget of this label.
protected Color	off_ The color in passive "off" mode.
protected Color	on_ The color in active "on" mode.
protected JComponent	parent_ The parent component that must be redrawn when the state of the drop zone changes.

Fields inherited from class javax.swing.border.LineBorder

lineColor, roundedCorners, thickness

Constructor Summary

DropZone(Color on, Color off, int thickness)
Creates an instance with the given colors and thickness.

DropZone(int thickness)
Creates a default drop zone with gray color in passive mode and white in active mode.

Method Summary

private Object	deserialize(InputStream in)
void	dragEnter(DropTargetDragEvent dtde)
void	dragExit(DropTargetEvent dte)
void	dragOver(DropTargetDragEvent dtde)
void	drop(DropTargetDropEvent dtde)
void	dropActionChanged(DropTargetDragEvent dtde)
void	setColor(Color color) Sets the line color.
void	setDelegate(DropDelegate delegate)
void	setParentComponent(JComponent parent) Sets the parent component of this drop zone.

Methods inherited from class javax.swing.border.LineBorder

createBlackLineBorder, createGrayLineBorder, getBorderInsets, getBorderInsets, getLineColor, getRoundedCorners, getThickness, isBorderOpaque, paintBorder

Methods inherited from class javax.swing.border.AbstractBorder

getInteriorRectangle, getInteriorRectangle

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DROPZONE_FLAVOR

public static final DataFlavor DROPZONE_FLAVOR

The DataFlavor supported by this drop zone.

parent_

protected JComponent parent_

The parent component that must be redrawn when the state of the drop zone changes.

dtarget_

protected DropTarget dtarget_

The DropTarget of this label.

delegate_

protected DropDelegate delegate_

The delegate that receives dropped data.

on_

protected Color on_

The color in active "on" mode.

off_

protected Color off_

The color in passive "off" mode.

Constructor Detail

DropZone

public DropZone(int thickness)

Creates a default drop zone with gray color in passive mode and white in active mode.

DropZone

public DropZone(Color on,
                Color off,
                int thickness)

Creates an instance with the given colors and thickness.

Method Detail

setDelegate

public void setDelegate(DropDelegate delegate)

Returns:

The DropDelegate that receives dropped data.

setColor

public void setColor(Color color)

Sets the line color.

Parameters:

color - The line color.

setParentComponent

public void setParentComponent(JComponent parent)

Sets the parent component of this drop zone. The parent component is the component that must be redrawn when the state of this drop zone changes.

Parameters:

parent - The parent component.

dragEnter

public void dragEnter(DropTargetDragEvent dtde)

Specified by:

dragEnter in interface DropTargetListener

dragOver

public void dragOver(DropTargetDragEvent dtde)

Specified by:

dragOver in interface DropTargetListener

dropActionChanged

public void dropActionChanged(DropTargetDragEvent dtde)

Specified by:

dropActionChanged in interface DropTargetListener

dragExit

public void dragExit(DropTargetEvent dte)

Specified by:

dragExit in interface DropTargetListener

drop

public void drop(DropTargetDropEvent dtde)

Specified by:

drop in interface DropTargetListener

deserialize

private Object deserialize(InputStream in)